<template>
  <HomePanel title="热门品牌" sub-title="国际经典 品质保证">
    <template v-slot:right>
      <a
        @click="toggle(-1)"
        href="javascript:;"
        class="iconfont icon-angle-left prev"
        :class="{ disabled: index === 0 }"
      ></a>
      <a
        @click="toggle(1)"
        href="javascript:;"
        class="iconfont icon-angle-right next"
        :class="{ disabled: index === 1 }"
      ></a>
    </template>
    <!-- <div ref="target" style="position: relative; height: 426px"> -->
    <div class="box" ref="target">
      <transition name="fade">
        <ul
          class="list"
          :style="{ transform: `translateX(${-index * 1240}px)` }"
          v-if="brands.length"
        >
          <li v-for="item in brands" :key="item.id">
            <RouterLink to="/">
              <img :src="item.picture" alt="" />
            </RouterLink>
          </li>
        </ul>
        <div v-else class="skeleton">
          <skeleton
            class="item"
            v-for="i in 5"
            :key="i"
            animated
            bg="#e4e4e4"
            width="240px"
            height="305px"
          />
        </div>
      </transition>
    </div>
  </HomePanel>
</template>

<script>
import HomePanel from 'components/content/HomePanel.vue'
import { findBrand } from 'api/home.js'
import { useLazyData } from 'hooks/index.js'
import { ref } from 'vue'
export default {
  name: 'HomeBrand',
  components: {
    HomePanel
  },
  setup () {
    // const brands = ref([]);
    // findBrand(10).then((res) => {
    //   brands.value = res.result;
    // });

    // 懒加载，如果要传参，则传递一个函数
    const { target, data } = useLazyData(() => findBrand(10))

    const index = ref(0)
    const toggle = (i) => {
      const newValue = index.value + i
      if (newValue < 0 || newValue > 1) {

      } else {
        index.value = newValue
      }
    }

    return {
      brands: data,
      target,
      toggle,
      index
    }
  }
}
</script>

<style scoped lang="less">
.skeleton {
  width: 100%;
  display: flex;

  .item {
    margin-right: 10px;

    &:nth-child(5n) {
      margin-right: 0;
    }
  }
}

.home-panel {
  background: #f5f5f5;
}

.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;

  &::before {
    font-size: 12px;
    position: relative;
    top: -2px;
  }

  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}

.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;

  .list {
    width: 200%;
    display: flex;
    transition: all 1s;

    li {
      margin-right: 10px;
      width: 240px;

      &:nth-child(5n) {
        margin-right: 0;
      }

      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}
</style>
